Paleontologist Hocknull examines a huge bone from Matilda, the most complete sauropod skeleton ever found in Australia, in an undated photograph.

Fossils of "strange pythonlike lizards with limbs, crocodiles, turtles, [and] armored dinosaurs" are among the skeletons also uncovered near Matilda's remains in the outback town of Winton, Hocknull said.

Hundreds of bones not yet analyzed will likely reveal more new species, he said. "There's [also] tantalizing evidence in the south of Queensland of really, really big sauropods—perhaps twice the size of Matilda and Clancy," he added.

"We don't have the T. rex yet, but there's every likelihood that we'll find [it]."

Photograph courtesy Australian Age of Dinosaurs Museum of Natural History